What Was the Key Event That Made Firearms Identification a Science

question 16

Multiple Choice

What was the key event that made firearms identification a science?

• A) its successful use to extract a confession by Henry Goddard
• B) its successful use in a criminal case by Paul Jeserich
• C) its development of the bullet comparison microscope by Calvin Goddard
• D) the establishment of a forensics laboratory by August Vollmer

Understand the concept of degrees of freedom and its calculation for chi-squared tests.

Differentiate between dependent and independent events in probability.

Recognize the distinction between goodness-of-fit tests and tests for independence.

Calculate expected frequencies using binomial and multinomial distributions.

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Definitions:

All Off Phase

In traffic signal programming, a phase where all lights at an intersection are red, stopping all traffic to allow for pedestrian crossing or to reset the sequence.

Inductive Pulse Generators

Inductive pulse generators are devices that use electromagnetic induction to generate electrical pulses, often used in sensors and for generating spark in ignition systems.

Mainshaft Speed Sensor

A device that measures the rotational speed of the mainshaft in a vehicle's transmission.

Input Shaft Speed Sensor

A sensor used to monitor the speed of the input shaft in a vehicle's transmission, providing crucial data for gear selection and shift timing.